180
FNCA52 TJSJ 271930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST MON JUL 27 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-280800-
SOUTHEAST COASTAL PLAINS-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 60 10 30
TEMP (24H TREND) 74 (-2) 91 (+1) 75 91
RH % (24H TREND) 92 (+7) 52 (-5) 91 52
WIND 20FT/EARLY(MPH) E 11 E 14 E 12 E 18
WIND 20FT/LATE(MPH) E 9 SE 16 E 11 E 18
MIXING HGT(FT-AGL/MSL) 4910 5060
TRANSPORT WND (MPH) E 20 E 23
VENT RATE (KT-FT) 83470 101200
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-280800-
SOUTHERN HILLS-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 10 30
TEMP (24H TREND) 70 (-3) 89 (+4) 71 89
RH % (24H TREND) 99 (+6) 62 (-8) 99 62
WIND 20FT/EARLY(MPH) E 9 E 11 E 10 E 14
WIND 20FT/LATE(MPH) E 9 SE 12 E 11 E 14
MIXING HGT(FT-AGL/MSL) 5530 5890
TRANSPORT WND (MPH) SE 18 E 22
VENT RATE (KT-FT) 88480 111910
DISPERSION 5 5
DSI 2 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-280800-
NORTH COASTAL PLAINS-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 60 20 20
TEMP (24H TREND) 73 (-3) 91 (+1) 74 91
RH % (24H TREND) 100 (+6) 61 (-7) 99 61
WIND 20FT/EARLY(MPH) E 12 E 14 E 12 E 16
WIND 20FT/LATE(MPH) SE 9 E 18 E 10 E 23
MIXING HGT(FT-AGL/MSL) 5460 5760
TRANSPORT WND (MPH) E 17 E 21
VENT RATE (KT-FT) 81900 103680
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-280800-
NORTHERN HILLS-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 80 10 50
TEMP (24H TREND) 71 (-2) 90 (+2) 72 90
RH % (24H TREND) 100 (+4) 64 (-4) 100 64
WIND 20FT/EARLY(MPH) E 10 E 12 E 11 E 13
WIND 20FT/LATE(MPH) SE 8 E 16 E 8 E 19
MIXING HGT(FT-AGL/MSL) 6100 7030
TRANSPORT WND (MPH) SE 14 E 20
VENT RATE (KT-FT) 73200 119510
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-280800-
WEST COAST-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 20 40 20 30
TEMP (24H TREND) 74 (0) 92 (+1) 74 92
RH % (24H TREND) 100 (+3) 63 (-4) 99 64
WIND 20FT/EARLY(MPH) E 8 E 13 SE 10 E 17
WIND 20FT/LATE(MPH) E 6 E 13 E 10 E 17
MIXING HGT(FT-AGL/MSL) 4460 4790
TRANSPORT WND (MPH) E 15 E 17
VENT RATE (KT-FT) 57980 71850
DISPERSION 5 5
DSI 2 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-280800-
EASTERN INTERIOR-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 60 40 30
TEMP (24H TREND) 72 (-3) 90 (+2) 73 90
RH % (24H TREND) 100 (+5) 60 (-7) 100 62
WIND 20FT/EARLY(MPH) E 10 SE 13 E 12 E 16
WIND 20FT/LATE(MPH) E 11 SE 14 E 12 E 16
MIXING HGT(FT-AGL/MSL) 6360 6530
TRANSPORT WND (MPH) SE 18 E 22
VENT RATE (KT-FT) 101760 124070
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-280800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 60 40 40
TEMP (24H TREND) 70 (-2) 86 (+5) 70 86
RH % (24H TREND) 100 (+2) 67 (-10) 100 69
WIND 20FT/EARLY(MPH) E 9 SE 12 E 10 E 14
WIND 20FT/LATE(MPH) E 8 SE 13 E 10 E 14
MIXING HGT(FT-AGL/MSL) 4320 4680
TRANSPORT WND (MPH) SE 21 E 22
VENT RATE (KT-FT) 77760 88920
DISPERSION 5 5
DSI 4 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-280800-
CENTRAL MOUNTAIN RANGE-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 20 60 10 40
TEMP (24H TREND) 68 (-3) 87 (+4) 69 88
RH % (24H TREND) 100 (+3) 68 (-8) 100 68
WIND 20FT/EARLY(MPH) E 5 SE 10 SE 8 E 12
WIND 20FT/LATE(MPH) E 5 SE 10 E 6 E 12
MIXING HGT(FT-AGL/MSL) 6430 7630
TRANSPORT WND (MPH) SE 15 E 18
VENT RATE (KT-FT) 83590 122080
DISPERSION 5 5
DSI 1 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-280800-
CAYEY MOUNTAIN RANGE-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 60 40 40
TEMP (24H TREND) 71 (-1) 85 (+2) 71 84
RH % (24H TREND) 100 (+1) 68 (-6) 100 70
WIND 20FT/EARLY(MPH) E 8 E 11 E 9 E 13
WIND 20FT/LATE(MPH) E 8 SE 12 E 9 E 13
MIXING HGT(FT-AGL/MSL) 5280 5120
TRANSPORT WND (MPH) SE 20 E 23
VENT RATE (KT-FT) 89760 102400
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-280800-
VIEQUES-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 60 40 20
TEMP (24H TREND) 79 (0) 90 (+1) 78 90
RH % (24H TREND) 89 (+2) 58 (-6) 90 57
WIND 20FT/EARLY(MPH) E 13 E 14 E 14 E 18
WIND 20FT/LATE(MPH) E 13 SE 16 E 16 E 18
MIXING HGT(FT-AGL/MSL) 3180 3370
TRANSPORT WND (MPH) SE 22 E 24
VENT RATE (KT-FT) 60420 70770
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-280800-
CULEBRA-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 40 10
TEMP (24H TREND) 78 (-2) 91 (+3) 79 91
RH % (24H TREND) 93 (+5) 62 (-7) 93 61
WIND 20FT/EARLY(MPH) E 13 E 16 E 16 E 18
WIND 20FT/LATE(MPH) E 13 SE 16 E 16 E 18
MIXING HGT(FT-AGL/MSL) 3190 3440
TRANSPORT WND (MPH) SE 23 E 24
VENT RATE (KT-FT) 63800 72240
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-280800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR MCLEAR
PRECIP TYPE NONE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 0 10 0 10
TEMP (24H TREND) 74 (-2) 91 (+1) 75 91
RH % (24H TREND) 97 (+9) 54 (-5) 94 54
WIND 20FT/EARLY(MPH) E 12 E 18 E 16 E 23
WIND 20FT/LATE(MPH) E 11 SE 18 E 14 E 21
MIXING HGT(FT-AGL/MSL) 4600 4940
TRANSPORT WND (MPH) SE 22 E 28
VENT RATE (KT-FT) 87400 118560
DISPERSION 5 5
DSI 3 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-280800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 20 10
TEMP (24H TREND) 78 (-1) 89 (+3) 78 89
RH % (24H TREND) 93 (+5) 63 (-6) 93 62
WIND 20FT/EARLY(MPH) E 13 E 17 E 16 E 19
WIND 20FT/LATE(MPH) E 13 SE 17 E 17 E 19
MIXING HGT(FT-AGL/MSL) 3210 3420
TRANSPORT WND (MPH) SE 22 E 25
VENT RATE (KT-FT) 60990 75240
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-280800-
ST CROIX-
330 PM AST MON JUL 27 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 30 10
TEMP (24H TREND) 77 (-2) 89 (+1) 78 89
RH % (24H TREND) 94 (+3) 64 (-5) 94 63
WIND 20FT/EARLY(MPH) E 13 E 18 E 16 E 19
WIND 20FT/LATE(MPH) E 13 SE 18 E 16 E 20
MIXING HGT(FT-AGL/MSL) 4360 4350
TRANSPORT WND (MPH) E 24 E 29
VENT RATE (KT-FT) 91560 108750
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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